package org.tomcat.unit501;

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.security.Principal;
import java.util.*;

public class HttpRequest implements HttpServletRequest, Request {

    private InputStream input;

    private  String uri;

    private String method;

    private String protocol;

    private String requestURI;

    private String queryString;

    private Map<String,String> headerPool = new HashMap<>();

    private String requestedSessionId;

    private boolean requestedSessionURL;

    private String remoteAddress;


    protected ArrayList cookies = new ArrayList();

    protected HashMap parameters = new HashMap();


    public HttpRequest(InputStream input) {
        this.input = input;
    }

    public String getUri() {
        return this.uri;
    }

    public void parse() {
        StringBuffer request = new StringBuffer(2048);
        int i = 0;
        byte[] buffer = new byte[2048];
        try {
            i = input.read(buffer);
        } catch (IOException e) {
            e.printStackTrace();
        }
        for (int j = 0; j < i; j++) {
            request.append((char) buffer[j]);
        }
        System.out.print(request.toString());
        uri = parseUri(request.toString());
    }

    private String parseUri(String requestString) {
        int index1, index2;
        index1 = requestString.indexOf(' ');
        if (index1 != -1) {
            index2 = requestString.indexOf(' ', index1 +1);
            if (index2 > index1) {
                return  requestString.substring(index1 + 1, index2);
            }
        }
        return null;
    }

    @Override
    public Object getAttribute(String s) {
        return null;
    }

    @Override
    public Enumeration<String> getAttributeNames() {
        return null;
    }

    @Override
    public String getCharacterEncoding() {
        return null;
    }

    @Override
    public void setCharacterEncoding(String s) throws UnsupportedEncodingException {

    }

    @Override
    public int getContentLength() {
        return 0;
    }

    @Override
    public String getContentType() {
        return null;
    }

    @Override
    public ServletInputStream getInputStream() throws IOException {
        return null;
    }

    @Override
    public String getParameter(String s) {
        return null;
    }

    @Override
    public Enumeration<String> getParameterNames() {
        return null;
    }

    @Override
    public String[] getParameterValues(String s) {
        return new String[0];
    }

    @Override
    public Map<String, String[]> getParameterMap() {
        return null;
    }

    @Override
    public String getProtocol() {
        return null;
    }

    @Override
    public String getScheme() {
        return null;
    }

    @Override
    public String getServerName() {
        return null;
    }

    @Override
    public int getServerPort() {
        return 0;
    }

    @Override
    public BufferedReader getReader() throws IOException {
        return null;
    }

    @Override
    public String getRemoteAddr() {
        return this.remoteAddress;
    }

    @Override
    public String getRemoteHost() {
        return null;
    }

    @Override
    public void setAttribute(String s, Object o) {

    }

    @Override
    public void removeAttribute(String s) {

    }

    @Override
    public Locale getLocale() {
        return null;
    }

    @Override
    public Enumeration<Locale> getLocales() {
        return null;
    }

    @Override
    public boolean isSecure() {
        return false;
    }

    @Override
    public RequestDispatcher getRequestDispatcher(String s) {
        return null;
    }

    @Override
    public String getRealPath(String s) {
        return null;
    }

    @Override
    public int getRemotePort() {
        return 0;
    }

    @Override
    public String getLocalName() {
        return null;
    }

    @Override
    public String getLocalAddr() {
        return null;
    }

    @Override
    public int getLocalPort() {
        return 0;
    }

    @Override
    public ServletContext getServletContext() {
        return null;
    }

    @Override
    public AsyncContext startAsync() throws IllegalStateException {
        return null;
    }

    @Override
    public AsyncContext startAsync(ServletRequest servletRequest, ServletResponse servletResponse) throws IllegalStateException {
        return null;
    }

    @Override
    public boolean isAsyncStarted() {
        return false;
    }

    @Override
    public boolean isAsyncSupported() {
        return false;
    }

    @Override
    public AsyncContext getAsyncContext() {
        return null;
    }

    @Override
    public DispatcherType getDispatcherType() {
        return null;
    }

    public String getQueryString() {
        return queryString;
    }

    @Override
    public String getRemoteUser() {
        return null;
    }

    @Override
    public boolean isUserInRole(String s) {
        return false;
    }

    @Override
    public Principal getUserPrincipal() {
        return null;
    }

    public void setQueryString(String queryString) {
        this.queryString = queryString;
    }

    public String getRequestedSessionId() {
        return requestedSessionId;
    }

    public void setRequestedSessionId(String requestedSessionId) {
        this.requestedSessionId = requestedSessionId;
    }

    public boolean isRequestedSessionURL() {
        return requestedSessionURL;
    }

    public void setRequestedSessionURL(boolean requestedSessionURL) {
        this.requestedSessionURL = requestedSessionURL;
    }

    @Override
    public String getAuthType() {
        return null;
    }

    @Override
    public Cookie[] getCookies() {
        return new Cookie[0];
    }

    @Override
    public long getDateHeader(String s) {
        return 0;
    }

    @Override
    public String getHeader(String s) {
        return this.headerPool.get(s);
    }

    @Override
    public Enumeration<String> getHeaders(String s) {
        ArrayList headers = headerPool.entrySet().stream().map(item -> item.getValue())
                .collect(ArrayList::new, ArrayList::add, ArrayList::addAll);
        return (Enumeration) new Enumerator(headers);
    }

    @Override
    public Enumeration<String> getHeaderNames() {
        ArrayList headers = headerPool.entrySet().stream().map(item -> item.getKey())
                .collect(ArrayList::new, ArrayList::add, ArrayList::addAll);
        return (Enumeration) new Enumerator(headers);
    }

    @Override
    public int getIntHeader(String s) {
        return 0;
    }

    public String getMethod() {
        return method;
    }

    @Override
    public String getPathInfo() {
        return null;
    }

    @Override
    public String getPathTranslated() {
        return null;
    }

    @Override
    public String getContextPath() {
        return null;
    }

    public void setMethod(String method) {
        this.method = method;
    }

    public String getRequestURI() {
        return requestURI;
    }

    @Override
    public StringBuffer getRequestURL() {
        return null;
    }

    @Override
    public String getServletPath() {
        return null;
    }

    @Override
    public HttpSession getSession(boolean b) {
        return null;
    }

    @Override
    public HttpSession getSession() {
        return null;
    }

    @Override
    public boolean isRequestedSessionIdValid() {
        return false;
    }

    @Override
    public boolean isRequestedSessionIdFromCookie() {
        return false;
    }

    @Override
    public boolean isRequestedSessionIdFromURL() {
        return false;
    }

    @Override
    public boolean isRequestedSessionIdFromUrl() {
        return false;
    }

    @Override
    public boolean authenticate(HttpServletResponse httpServletResponse) throws IOException, ServletException {
        return false;
    }

    @Override
    public void login(String s, String s1) throws ServletException {

    }

    @Override
    public void logout() throws ServletException {

    }

    @Override
    public Collection<Part> getParts() throws IOException, ServletException {
        return null;
    }

    @Override
    public Part getPart(String s) throws IOException, ServletException {
        return null;
    }

    public void setRequestURI(String requestURI) {
        this.requestURI = requestURI;
    }

    public void setProtocol(String protocol) {
        this.protocol = protocol;
    }


    @Override
    public ServletRequest getRequest() {
        return this;
    }

    @Override
    public void addHeader(String key, String value) {
        this.headerPool.put(key, value);
    }

    @Override
    public void setRemoteAddress(String remoteAddress) {
        this.remoteAddress = remoteAddress;
    }
}
